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<?php
namespace Drupal\Core\Form;
/**
* Provides an interface for processing form submissions.
*/
interface FormSubmitterInterface {
/**
* Handles the submitted form, executing callbacks and processing responses.
*
* @param array $form
* An associative array containing the structure of the form.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* The current state of the form.
*
* @return null|\Symfony\Component\HttpFoundation\Response
* If a response was set by a submit handler, or if the form needs to
* redirect, a Response object will be returned.
*/
public function doSubmitForm(&$form, FormStateInterface &$form_state);
/**
* Executes custom submission handlers for a given form.
*
* Button-specific handlers are checked first. If none exist, the function
* falls back to form-level handlers.
*
* @param $form
* An associative array containing the structure of the form.
* @param $form_state
* The current state of the form. If the user submitted the form by clicking
* a button with custom handler functions defined, those handlers will be
* stored here.
*/
public function executeSubmitHandlers(&$form, FormStateInterface &$form_state);
/**
* Redirects the user to a URL after a form has been processed.
*
* After a form is submitted and processed, normally the user should be
* redirected to a new destination page. This function figures out what that
* destination should be, based on the $form_state and the 'destination'
* query string in the request URL, and redirects the user there.
*
* The result of \Drupal\Core\Form|FormStateInterface::getRedirect()
* determines where to redirect the user. See the possible return values
* listed there. If the result is FALSE, then the user will not be redirected.
*
* Here is an example of how to set up a form to redirect to the path 'user':
* @code
* $form_state->setRedirect('user.page');
* @endcode
* And here is an example of how to redirect to 'node/123?foo=bar#baz':
* @code
* $form_state->setRedirect('entity.node.canonical',
* array('node' => 123),
* array(
* 'query' => array(
* 'foo' => 'bar',
* ),
* 'fragment' => 'baz',
* ),
* );
* @endcode
*
* @param \Drupal\Core\Form\FormStateInterface $form_state
* The current state of the form.
*
* @return \Symfony\Component\HttpFoundation\RedirectResponse|null
*
* @see \Drupal\Core\Form\FormBuilderInterface::processForm()
* @see \Drupal\Core\Form\FormBuilderInterface::buildForm()
*/
public function redirectForm(FormStateInterface $form_state);
}